Resource allocation for a full-duplex wireless-powered communication network with imperfect self-interference cancelation

• Published in: IEEE communications letters Vol. 20; no. 12; pp. 2482 - 2485
• Main Authors: Do, Thinh Phu, Kim, Yun Hee
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.12.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Approximation; Approximation algorithms; Communications networks; Computational geometry; Convexity; Full duplex; Interference; Interference cancellation; Optimization; Power management; Resource allocation; Resource management; self interference; Time Division Multiple Access; Uplink; Wireless communication; Wireless communications; Wireless power transmission; wireless powered communication; Wireless sensor networks
• ISSN: 1089-7798; 1558-2558
• DOI: 10.1109/LCOMM.2016.2612190

We consider a full-duplex wireless powered communication network, supporting wireless power transfer of a hybrid access point in the downlink and time-division multiple-access (TDMA) devices in the uplink simultaneously. By considering the residual self-interference (SI), we formulate the problems of power allocation (PA) and time allocation (TA) to maximize the sum rate of the uplink subject to the energy causality as well as the peak and average power constraints. The non-convex optimization problems of the joint PA-TA and the PA are approximated as second-order cone programs to be solved with successive convex approximation. The results show that the proposed PA-TA (PA) algorithm outperforms the conventional PA-TA when the SI exists at any (severe) level.